scholarly journals Determination of lime, magnesia, manganese, copper, zinc and alumina in iron ore by atomic absorption method

1968 ◽  
Vol 17 (6) ◽  
pp. 679-683 ◽  
Author(s):  
Yoshihide ENDO ◽  
Toshihiko HATA ◽  
Yuki NAKAHARA
Keyword(s):  
Atomic Absorption ◽  
Iron Ore ◽  
Absorption Method ◽  
Atomic Absorption Method ◽  
Copper Zinc ◽  
Manganese Copper

Determination of Minor Nutrients in Fertilizers by Atomic Absorption Spectrophotometry: Second Collaborative Study

1965 ◽  
Vol 48 (6) ◽  
pp. 1100-1103
Author(s):  
C H Mcbride
Keyword(s):  
Atomic Absorption ◽  
Collaborative Study ◽  
Atomic Absorption Spectrophotometry ◽  
Absorption Method ◽  
Atomic Absorption Method ◽  
Absorption Spectrophotometry ◽  
Minor Nutrients

Abstract The atomic absorption method studied last year was re-examined and extended to include calcium and sodium. The procedures were submitted to 16 collaborators for determination of Ca, Cu, Fe, Mg, Mn, Na, and Zn. Results for Ca and Na were discouraging; further study is recommended.

Collaborative Study of the Determination of Molybdenum in Fertilizers

1972 ◽  
Vol 55 (5) ◽  
pp. 989-990
Author(s):  
S R Koirtyohann
Keyword(s):  
Atomic Absorption ◽  
Collaborative Study ◽  
Positive Bias ◽  
Absorption Method ◽  
Atomic Absorption Method ◽  
Additional Work

Abstract An atomic absorption method for the determination of molybdenum in fertilizers was tested collaboratively. The results indicate that additional work is needed to improve precision at low molybdenum levels and to test for a possible positive bias in the method.

The determination of chromic oxide in faeces samples by atomic absorption spectrophotometry

1962 ◽  
Vol 59 (3) ◽  
pp. 381-385 ◽  
Author(s):  
C. H. Williams ◽  
D. J. David ◽  
O. Iismaa
Keyword(s):  
Atomic Absorption ◽  
Chemical Method ◽  
Atomic Absorption Spectrophotometry ◽  
Test Solution ◽  
Chromic Oxide ◽  
Absorption Method ◽  
Atomic Absorption Method ◽  
Absorption Spectrophotometry ◽  
Calcium And Magnesium

A rapid and accurate atomic absorption method for the determination of chromium in faeces samples from pasture experiments using chromic oxide ‘markers’ is described. Of the elements present after ashing and digesting the samples in a phosphoric acid—manganese sulphate—potassium bromate solution silicate, aluminium, calcium and magnesium were found to interfere in the determination. The effects of these interferences were overcome by the addition of calcium to the test solution and by the addition of silicate to the standards, which were prepared in ‘blank’ solutions.The sensitivities of a number of alternate chromium resonance lines relative to that of Cr 3578·7 Å. are given. These lines may be used to increase the concentration range of the analysis.The results of a comparison of the atomic absorption method with a chemical method are given.

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